Even Ant-Man has the combination of Edgar Wright and Marvel. If The World's End does as well as Shaun of the Dead and Hot Fuzz, I don't think it will be hard to get people to see Ant-Man.

Guardians will probably be a harder sell. But after seeing the footage at Comic Con, I 100% think people will want to see it if they're shown anything that was even close to as good as what Marvel showed there.